# Analog Communication Lab Manual Pdf

## PDF) Analog Communications Lab Laboratory Manual

Instruments and Material Describes a summary of the operation and use of those components or integrated circuits that may be unfamiliar to students. Share whatever you feel about the book- it is yours. Connect the Frequency Modulation circuit diagram shown in Fig.

Record the input frequency as f Lh in the Table. Venu Gopala Rao, Professor, Dept. All these circuit variats are achieved by connecting proper values of resistors and capacitors externally.

What is Amplitude modulation index? It is therefore essential that you build the circuit in advance before going to the lab session. Now increase the frequency of the input sinusoidal the amplitude and offset remains the same to Hz, Hz and Hz. Basic theory of Pulse Width modulation techniques. What are the different degrees of modulation?

Analog Communications Lab Laboratory Manual. Now wire the analog multiplier circuit as shown in Fig. Initially wire the circuit for analog inverter circuit as shown in Fig.

Understanding the data sheets of components used in the experiment. To measure the percentage of modulation, and total power in frequency modulation. What do you mean by coherence detection and non-coherent detection? Failure to do this will result in most of the time in the lab being spent on assembling the circuit rather that testing it and taking measurements. Pulse Amplitude Modulation and Demodulation.

Draw the circuit of varactor diode modulator? This waveform should be inversion of the input sine wave. In every experiment you are required to perform analytical and computational work in advance. Pulse Position Modulation and Demodulation. This volatge is fed as degenerative or negtive feedback to the control the gain of superheterodyne receivers.

## Analog Communication Lab Manual VTU

This de-emphasis circuit is placed at the receiving side and acts as a low pass filter. It is implemented in the form of a circuit which extracts the dc ofset voltage which is present along with the demodulated message. Connections are made as per the circuit diagram shown in Fig.

## Kavya Manohar

In general, lab reports are graded based on the data gathered in the experiments, their proper presentation, analysis and the correlation between experimental, theoretical and computer-based results. It can be used for diferent appli- cations like multiplication, division, squarer, modulator, demodulator, ilter etc. Draw the frequency response of a de-emphasis circuit? The can be used to provide time delays, as an oscillator, and as a lip-lop element. No Am fc fm f max f min Freq.

Explain the operation of pre-emphasis circuit? If the X and Y rolls are interchanged what will happen? Give the formula for the cutoff frequency of the pre-emphasis circuit? Now the demodulation circuit is connected across the output of modulator circuit. Tabulated the modulation index by varying the amlitudes of message and the carrier.

This section is not intended to replace the material presented in the lecture but rather to serve as a reference point. Now increase the frequency of the input sinusoidal the amplitude the same to Hz, blackhat pdf Hz the Nyquist frequency and Hz. The noise has more effect on the higher modulating frequencies than on the lower modulating frequencies. Theory Intermediate frequency ampliiers are tuned voltage ampliiers used to amplify a particular frequency.

Plot the waveforms on a graph sheet. Suggestions on improvement in conceptual clarity, diagrams, typography are most welcome. Using Diode envelope detector. Measure the levels of Vmax and Vmin. Please feel free to ask the instructor for assistance should you have any questions about an experiment.

Width may be varied by varying the time of occurrence of leading edge, the trailing edge or both edges of the pulse in accordance with modulating wave. Theory Any ampliier can be converted into a sinusoidal oscillator if Barkhausen condi- tions are satisied.

Submit your illustration to the lab instructor at next week's lab. Connections should be made carefully.

Why we need to modulation? Its primary function is to amplify only the tuned fre- quency with maximum gain and reject all other frequencies above and below this frequency. Where the de-emphasis circuit is used?

Analog Communication Laboratory Manual. It mostly adheres to the syllabus of the University of Calicut.

Power Line Carrier Communication. This book is written in a way that a student with basic understanding on electronic circuit theory can learn the theory and experiment the basics of analog communication techniques. This is a work in progress version of the laboratory manual.

Observation Plot the message, carrier, modulated and demodulated waves on a graph sheet. Connect the circuit as per circuit diagram as shown in Fig. What are the classifications of pulse modulation techniques?